package org.smart4j.framework.proxy;

import org.omg.CORBA.OBJ_ADAPTER;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Method;

/**
 * Created by james on 16/2/5.
 */
public abstract class AspectProxy implements Proxy {
    private static final Logger LOGGER = LoggerFactory.getLogger(AssertionError.class);

    public final Object doProxy(ProxyChain proxyChain) throws Throwable {
        Object result = null;
        Class<?> cls = proxyChain.getTargetClass();
        Method method = proxyChain.getTargetMethod();
        Object[] params = proxyChain.getMethodParams();

        begin();

        try {
            if (intercept(cls,method,params)){
                before(cls,method,params);
                result = proxyChain.doProxyChain();
                after(cls,method,params,result);
            } else {
                result = proxyChain.doProxyChain();
            }
        } catch (Exception e) {
            LOGGER.error("proxy failure",e);
            error(cls,method,params,e);
            throw e;
        } finally {
            end();
        }

        return result;
    }

    public void begin(){}

    public boolean intercept(Class<?> cls,Method method,Object[] params) throws Throwable{
        return true;
    }

    public void before(Class<?> cls,Method method,Object[] params) throws Throwable{

    }

    public void after(Class<?> cls,Method method,Object[] params,Object result) throws Throwable{

    }

    public void error(Class<?> cls,Method method,Object[] params,Throwable e){

    }

    public void end(){}
}
